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Water cycle
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=== Water in storage === {{Further|Water resources|Water distribution on Earth}} [[File:HumanIntegratedWaterCycle (2).jpg|thumb|upright=2|Water cycle showing human influences and major pools (storages) and fluxes.<ref>{{Cite journal |last1=Abbott |first1=Benjamin W. |last2=Bishop |first2=Kevin |last3=Zarnetske |first3=Jay P. |last4=Minaudo |first4=Camille |last5=Chapin |first5=F. S. |last6=Krause |first6=Stefan |last7=Hannah |first7=David M. |last8=Conner |first8=Lafe |last9=Ellison |first9=David |last10=Godsey |first10=Sarah E. |last11=Plont |first11=Stephen |last12=Marçais |first12=Jean |last13=Kolbe |first13=Tamara |last14=Huebner |first14=Amanda |last15=Frei |first15=Rebecca J. |date=2019 |title=Human domination of the global water cycle absent from depictions and perceptions |url=http://pure-oai.bham.ac.uk/ws/files/80318786/27364_2_merged_1554614894.pdf |journal=Nature Geoscience |language=en |volume=12 |issue=7 |pages=533–540 |bibcode=2019NatGe..12..533A |doi=10.1038/s41561-019-0374-y |issn=1752-0894 |s2cid=195214876}}</ref>]] The water cycle describes the processes that drive the movement of water throughout the [[hydrosphere]]. However, much more water is "in storage" (or in "pools") for long periods of time than is actually moving through the cycle. The storehouses for the vast majority of all water on Earth are the oceans. It is estimated that of the 1,386,000,000 km<sup>3</sup> of the world's water supply, about 1,338,000,000 km<sup>3</sup> is stored in oceans, or about 97%. It is also estimated that the oceans supply about 90% of the evaporated water that goes into the water cycle.<ref name=":3">{{Cite web |title=The Water Cycle summary |url=https://water.usgs.gov/edu/watercyclesummary.html |url-status=live |archive-url=https://web.archive.org/web/20180116135448/https://water.usgs.gov/edu/watercyclesummary.html |archive-date=2018-01-16 |access-date=2018-01-15 |website=USGS Water Science School}}</ref> The Earth's ice caps, glaciers, and permanent snowpack store another 24,064,000 km<sup>3</sup>, accounting for only 1.7% of the planet's total water volume. However, this quantity of water is 68.7% of all freshwater on the planet.<ref>{{cite web |last1=Water Science School |title=Ice, Snow, and Glaciers and the Water Cycle |url=https://www.usgs.gov/special-topics/water-science-school/science/ice-snow-and-glaciers-and-water-cycle#:~:text=Ice%20caps%20and%20global%20water%20distribution&text=As%20these%20charts%20and%20the,in%20ice%20caps%20and%20glaciers. |website=USGS |date=8 September 2019 |publisher=US Department of the Interior |access-date=October 17, 2022}}</ref>
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